CN100497200C - Chub, grass carp, cladophora and Daphnia hyaline cooperated algae control method - Google Patents
Chub, grass carp, cladophora and Daphnia hyaline cooperated algae control method Download PDFInfo
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- CN100497200C CN100497200C CNB2007100718286A CN200710071828A CN100497200C CN 100497200 C CN100497200 C CN 100497200C CN B2007100718286 A CNB2007100718286 A CN B2007100718286A CN 200710071828 A CN200710071828 A CN 200710071828A CN 100497200 C CN100497200 C CN 100497200C
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Abstract
The present invention relates to a method of cooperative control of alga in a water body comprising silver carp, bighead carp, grass carp, cladophora and daphnia hyaline, which relates to a water treatment method and solves the problem of water quality depravation caused by the descent of water body transparency due to the hypertrophy of alga, in particular adapted to solve the problem of that the eutrophication high algae-laden raw water affects the conventional treatment in current water plant, and the cost is high. The method comprises the steps of that: silver carp, bighead carp and grass carp are cultured in eutrophication water body, and a floating net cage is arranged therein; cladophora attached grows in the nylon wire net of the floating net cage, and daphnia hyaline grows inside of the floating net cage. The present invention has the advantages of easy operation, high efficiency, economy and shortcut and easy control, and can be popularized on a large scale. In the present invention, the removal percentage of phosphor is 65~69.5%, the average removal percentage of alga is 75~77.5% and the average removal percentage of chlorophyll is 65~75%.
Description
Technical field
The present invention relates to a kind of water treatment method, more specifically relate to a kind of method of utilizing algae content in the multiple fresh water hydrobiont Collaborative Control water factory eutrophic raw water, be applicable to water factory's eutrophication, algae concentrated feeding water.
Background technology
Body eutrophication is owing to the excessive water body effect that causes of nutritive substances such as nitrogen, phosphorus input, mainly shows as the hypertrophy of algae in the water, also follows the variation of a series of water quality and water ecology simultaneously, causes water transparency to descend water quality deterioration.The eutrophication algae concentrated feeding water greatly influences the ordinary production of waterworks.
Existing algae-removing method mainly contains in water treatment: add chemical agent and remove algae, air floatation alga removing, microorganism except that methods such as algaes except that algae, Microfilter.Though chemical agent removes the algae applying flexible, has increased the disadvantageous chemical substance of health; Microfilter and air floatation alga removing complicated operation, cost are higher; Algicidal method effects such as the ozone of Chu Xianing, ultraviolet ray or laser are remarkable in recent years, but facility investment is big, cost is high, treatment scale is limited, only can be used for bench-scale testing.
In recent years, owing to biological control algae-removing method economy has received increasing concern, the biological species that is adopted is also more and more, and its ultimate principle is to adopt the growth of special organism with the integral part in control algae or other food chains.In the Dian Chi, people adopt waterplant such as planting Herba Eichhorniae to absorb inorganic nitrogen phosphorus, obtained effect preferably, but a large amount of breedings of consequent waterplant have brought new trouble again.
Summary of the invention
The objective of the invention is in order to solve in the water because the hypertrophy of algae causes water transparency to descend, the problem of water quality deterioration, it is influential to conventional treatment process to be particularly useful for solving present waterworks eutrophication algae concentrated feeding water, the problem that production cost is high, and the method for a kind of silver carp, grass carp, bristle algae and daphnia hyaline cooperated control algae is provided.The present invention has united the breeding that synergy such as the bristle algae, the transparent Magna of zooplankton of aquatic fish (silver carp, grass carp), apposition growth is controlled algae, reduces the trophic level of the former water of eutrophy, has except that algae is stable, characteristics of high efficiency.The step of control algae of the present invention is as follows: put silver carp and grass carp in a suitable place to breed and make up floating net cage in eutrophication water; Be attached with the bristle algae on the nylon mesh in the floating net cage, growth has transparent Magna in the floating net cage.
Principle of the present invention: silver carp is main foodstuff with planktonic organism, and grass carp is main foodstuff with plants such as bristle algaes, and thread bristle algae can absorb nutritive substances such as a large amount of nitrogen, phosphorus.Transparent Magna then mainly is food with the planktonic algae.
Transparent Magna breeds growth in the net cage of manual manufacture, promptly with the symbiosis of bristle algae, thereby avoid ingesting of silver carp; The grass carp bristle algae that ingests only can grow the bristle algae, and keeps certain biomass in net cage.The bristle algae of regularly gathering in the net cage is directly dropped in the water, and the bristle algae that ingests of the grass carp in the water is converted into the grass carp organism to the bristle algae, reaches the removal purpose.Present technique mainly is from ecological angle, utilize hydrobiological feeding habits and the relation of the food chain between them in the physical environment, reach controlling and removing algae, reduce the purpose of water nutrition level, thereby guaranteed the efficient of drinking water treatment, improved the biological safety that supplies water.And biological species of the present invention all is a native species, does not have the harm problem of biotic intrusion.This method is simple, can effectively reduce algae content and trophic level in the raw water of waterworks, solves the influence of waterworks eutrophication algae concentrated feeding water to conventional treatment process, reduces production costs, and puies forward high yield water water quality.
The average removal rate of phosphorus is 65～69.5% among the present invention, and the algae average removal rate is 75～77.5%, and the chlorophyll a average removal rate is 65～75%.
The present invention has made full use of the feeding habits difference of silver carp, grass carp, transparent algae.Compare with existing algae improvement method, the inventive method is easily gone, cost is extremely low, efficient is higher, economy is quick, be easy to management, can be in large-scale application.
Embodiment
Embodiment one: the step of present embodiment control algae is as follows: put silver carp and grass carp in a suitable place to breed and make up floating net cage in eutrophication water; Apposition growth has the bristle algae on the nylon mesh in the floating net cage, and growth has transparent Magna in the floating net cage.
The feeding habits difference of present embodiment comprehensive utilization silver carp, grass carp, transparent Magna and bristle algae, thereby can both accomplish comprehensively filter food and conversion to the planktonic algae in the eutrophication water, chip etc., nutritive substance in the water body just can be converted into the fish organism like this, reaches the purpose that reduces the water nutrition level.
Embodiment two: in the present embodiment in eutrophication water the input density of silver carp be 60～100g/m
3, single cabrage amount of silver carp is 60～200g; The input density of grass carp is 20～60g/m
3, single cabrage amount of grass carp is 30～100g.
A large amount of evidences is put silver carp in a suitable place to breed and grass carp can reduce nutrition contents such as water body nitrogen phosphorus effectively by these data, control planktonic algae and bristle algae quantity, for the high algae phase blue-green algae more significant removal effect is arranged.
Embodiment three: the input density of silver carp is 70～85g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment four: the input density of body silver carp is 75g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment five: the input density of body silver carp is 82.3g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment six: single cabrage amount of silver carp is 70～90g in the present embodiment.Other is identical with embodiment two.
Embodiment seven: single cabrage amount of silver carp is 80g in the present embodiment.Other is identical with embodiment two.
Embodiment eight: the input density of grass carp is 25～50g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment nine: the input density of grass carp is 30g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment ten: the input density of grass carp is 40.6g/m in the present embodiment
3Other is identical with embodiment two.
Embodiment 11: single cabrage amount of grass carp is 40～90g in the present embodiment.Other is identical with embodiment two.
Embodiment 12: single cabrage amount of grass carp is 50g in the present embodiment.Other is identical with embodiment two.
Embodiment 13: floating net cage is for being that the Stainless Steel Cloth of 2～8mm is made uncovered net cage with the aperture in the present embodiment, and floating net cage length * wide * height is of a size of (1～2m) * (1～2m) * (1～2m); Corner Strapped float above the floating net cage makes floating net cage sidewall upper edge exceed the water surface 0.2～0.4m; Floating net cage internal fixation and parallel sidewalls, with vertical aperture, case bottom surface be 1～3cm nylon mesh, the dual-side of nylon mesh and corresponding floating net cage sidewall are stitched together, the base of nylon mesh and floating net cage are gone to the bottom and are stitched together, between two nylon mesh and the distance between the floating net cage sidewall that parallels with it be 30～35cm, apposition growth bristle algae on the nylon mesh, it is the transparent Magna of 10～50/L that the interior length of floating net cage has density; Distance in water body between the floating net cage is decided to be 10～15 times of floating net cage length and width, adopts arranged.Other is identical with embodiment one.
The floating net cage that present embodiment makes up has been avoided the predation of silver carp to transparent Magna; Grass carp in the water body can not enter net cage on the other hand, the cleaning of can only ingesting to the bristle algae of the peripheral growth of net cage, thus guaranteed that the bristle algae has a stable biomass.
Embodiment 14: the floating net cage of present embodiment is for being that the Stainless Steel Cloth of 5mm is made uncovered floating net cage with the aperture.Other is identical with embodiment 13.
Embodiment 15: floating net cage sidewall exceeds water surface 0.3m in the present embodiment.Other is identical with embodiment 13.
Embodiment 16: the aperture of nylon mesh is 1.5cm in the present embodiment.Other is identical with embodiment 13.
Embodiment 17: in the present embodiment between two nylon mesh and the distance between the floating net cage sidewall that parallels with it be 33cm.Other is identical with embodiment 13.
Embodiment 18: the cultivation of bristle algae and transparent Magna in the present embodiment: floating net cage stopped in water after 3～4 weeks, and the bristle algae is self-sow on the net, and transparent Magna accrues in floating net cage.Other is identical with embodiment 13.
Embodiment 19: what present embodiment and embodiment 18 were different is that transparent Magna directly introduces floating net cage by the outside.Other is identical with embodiment 18.
Embodiment 20: the present embodiment area is 0.016km
2, average depth is that the pond of 3.5m is put silver carp and grass carp and floating net cage in a suitable place to breed, the input density of silver carp is 82.3g/m
3, single cabrage amount of silver carp is 60～200g, the injected volume of grass carp is 40.6g/m
3, single cabrage amount of grass carp is 30～100g; Floating net cage is of a size of 2m * 2m * 2m, places 30, and the placement distance in the pond between the net cage is 10～15 times of length and width, adopts arranged.Other is identical with embodiment 13.
The average hydraulic detention time in pond is 3 days in the present embodiment.Through 63 days observation, the water inlet total phosphorous was 0.05-0.1mg/L, and the water outlet total phosphorous is all the time less than 0.02mg/L, and average removal rate is 68.9%.Water inlet algae content is 2,000 ten thousand/L～5,000 ten thousand/L, water outlet algae content all the time 5,000,000/below the L, the algae average removal rate is 76.5%, the chlorophyll a average removal rate is 70.1%.
Claims (10)
1, the method for a kind of silver carp, grass carp, bristle algae and daphnia hyaline cooperated control algae, the step that it is characterized in that controlling algae is as follows: put silver carp and grass carp in a suitable place to breed and make up floating net cage in eutrophication water; Apposition growth has the bristle algae on the nylon mesh in the floating net cage, and growth has transparent Magna in the floating net cage.
2, the method for silver carp grass carp according to claim 1, bristle algae and daphnia hyaline cooperated control algae, the input density that it is characterized in that silver carp in eutrophication water is 60～100g/m
3, single cabrage amount of silver carp is 60～200g; The input density of grass carp is 20～60g/m
3, single cabrage amount of grass carp is 30～100g.
3, the method for silver carp grass carp according to claim 2, bristle algae and daphnia hyaline cooperated control algae, the input density that it is characterized in that silver carp in the present embodiment is 70～85g/m
3
4,, it is characterized in that single cabrage amount of silver carp is 70～90g according to the method for claim silver carp according to claim 2, grass carp, bristle algae and daphnia hyaline cooperated control algae.
5, the method for silver carp grass carp according to claim 2, bristle algae and daphnia hyaline cooperated control algae, the input density that it is characterized in that grass carp is 25～50g/m
3
6, the method for silver carp grass carp according to claim 1, bristle algae and daphnia hyaline cooperated control algae, it is characterized in that floating net cage for being that the Stainless Steel Cloth of 2～8mm is made uncovered net cage with the aperture, floating net cage length * wide * height is of a size of (1～2m) * (1～2m) * (1～2m); Corner Strapped float above the floating net cage makes floating net cage sidewall upper edge exceed the water surface 0.2～0.4m; Floating net cage internal fixation and parallel sidewalls, with vertical aperture, case bottom surface be 1～3cm nylon mesh, the dual-side of nylon mesh and corresponding floating net cage sidewall are stitched together, the base of nylon mesh and floating net cage are gone to the bottom and are stitched together, between two nylon mesh and the distance between the floating net cage sidewall that parallels with it be 30～35cm, apposition growth bristle algae on the nylon mesh, it is the transparent Magna of 10～50/L that the interior length of floating net cage has density; Distance in water body between the floating net cage is decided to be 10～15 times of floating net cage length and width, adopts arranged.
7, the method for silver carp according to claim 6, grass carp, bristle algae and daphnia hyaline cooperated control algae is characterized in that floating net cage is for being that the Stainless Steel Cloth of 5mm is made uncovered floating net cage with the aperture.
8, the method for silver carp grass carp according to claim 6, bristle algae and daphnia hyaline cooperated control algae is characterized in that floating net cage sidewall upper edge exceeds water surface 0.3m.
9, the method for silver carp grass carp according to claim 6, bristle algae and daphnia hyaline cooperated control algae, the aperture that it is characterized in that nylon mesh is 1.5cm.
10, the method for silver carp grass carp according to claim 6, bristle algae and daphnia hyaline cooperated control algae, it is characterized in that between two nylon mesh and the floating net cage sidewall that parallels with it between distance be 33cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100718286A CN100497200C (en) | 2007-03-05 | 2007-03-05 | Chub, grass carp, cladophora and Daphnia hyaline cooperated algae control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100718286A CN100497200C (en) | 2007-03-05 | 2007-03-05 | Chub, grass carp, cladophora and Daphnia hyaline cooperated algae control method |
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| CN101037261A CN101037261A (en) | 2007-09-19 |
| CN100497200C true CN100497200C (en) | 2009-06-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739174A (en) * | 2014-02-13 | 2014-04-23 | 韩晋京 | Method for purifying eutrophic water body by using aquatic animals, plants and microorganisms |
| CN105347502A (en) * | 2015-12-12 | 2016-02-24 | 潘宏坚 | Method for reducing nitrogen and phosphorus in eutrophic water body |
| CN106342730A (en) * | 2016-08-30 | 2017-01-25 | 苏州市阳澄湖三家村蟹业有限公司 | Breeding method for polyculture of silver carp with grass carp |
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2007
- 2007-03-05 CN CNB2007100718286A patent/CN100497200C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 围隔中不同密度鲢对浮游植物的影响. 唐汇娟，谢平.华中农业大学学报，第25卷第3期. 2006 |
| 围隔中不同密度鲢对浮游植物的影响. 唐汇娟，谢平.华中农业大学学报，第25卷第3期. 2006 * |
| 富营养化水体中自然食物对透明溞（Daphnia hyalina）生长与繁殖影响的初步实验. 林娴，韩博平.生态科学，第25卷第2期. 2006 |
| 富营养化水体中自然食物对透明溞（Daphnia hyalina）生长与繁殖影响的初步实验. 林娴，韩博平.生态科学，第25卷第2期. 2006 * |
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